package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Resource
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){
        /**
         * 根据页面提交的username数据查询数据库
         * 若没有查到 则返回失败
         * 若查到 则将密码进行解密 对比
         * 若不相等 则返回登录失败
         * 若相等 则查询禁用状态 已禁用 则返回已禁用
         * 登陆成功 则将员工id存入session 并返回登录成功
         */

        //将页面提交的密码进行md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee tmp = employeeService.getOne(queryWrapper);

        //没有查询到
        if(tmp == null){
            return R.error("登录失败");
        }

        //密码比对 如果不一致则返回登录失败
        if(!tmp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //则查询禁用状态 已禁用 则返回已禁用
        if(tmp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        request.getSession().setAttribute("employee",tmp.getId());

        return R.success(tmp);
    }

    /**
    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){

        //清理session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");

        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee e){


        //设置初始密码 123456 并进行MD5加密
        String password = DigestUtils.md5DigestAsHex("123456".getBytes());
        e.setPassword(password);
        //e.setCreateTime(LocalDateTime.now());
        //e.setUpdateTime(LocalDateTime.now());

        //获得当前登录用户id;
        //Long id = (Long) request.getSession().getAttribute("employee");
        //e.setCreateUser(id);
        //e.setUpdateUser(id);

        employeeService.save(e);

        return R.success("新增员工成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        log.info("page={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        if(name != null) queryWrapper.like(Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){

        //Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){

        Employee employee = employeeService.getById(id);
        //if(employee != null)
        return R.success(employee);
    }
}
